已开发了在存在石墨化碳氮化物(gC 3 N 4)的情况下,进行甲硅烷基胺和α-氨基酸的光氧化活化的方案,以进行脱甲硅基和脱羧的加成,烯丙基化和杂芳基化。该方法具有广泛的范围,并以高收率提供了所需的产品。gC 3 N 4催化系统的非均质性质使其易于回收和循环利用,并且可以多次使用而不会损失活性。光氧化还原催化的反应也可以以连续的光流方式进行并按比例放大至克级。因此,稳定且容易获得的聚合物gC 3 N 4 提供了均相光敏剂的替代品,用于生成有价值的自由基中间体,用于合成和催化。
Amine α-heteroarylation via photoredox catalysis: a homolytic aromatic substitution pathway
作者:Christopher K. Prier、David W. C. MacMillan
DOI:10.1039/c4sc02155j
日期:——
The direct alpha-heteroarylation of tertiary amines has been accomplished via photoredox catalysis to generate valuable benzylic amine pharmacophores. A variety of five-and six-membered chloroheteroarenes are shown to function as viable coupling partners for the alpha-arylation of a diverse range of cyclic and acyclic amines. Evidence is provided for a homolytic aromatic substitution mechanism, in